EP 4095213 A1 20221130 - BATTERY ADHESIVE, LITHIUM-ION BATTERY NEGATIVE ELECTRODE PLATE AND LITHIUM-ION BATTERY

Title (en)

BATTERY ADHESIVE, LITHIUM-ION BATTERY NEGATIVE ELECTRODE PLATE AND LITHIUM-ION BATTERY

Title (de)

BATTERIEKLEBSTOFF, NEGATIVE ELEKTRODENPLATTE EINER LITHIUM-IONEN-BATTERIE UND LITHIUM-IONEN-BATTERIE

Title (fr)

ADHÉSIF DE BATTERIE, PLAQUE D'ÉLECTRODE NÉGATIVE DE BATTERIE AU LITHIUM-ION ET BATTERIE AU LITHIUM-ION

Publication

EP 4095213 A1 20221130 (EN)

Application

EP 20915776 A 20200803

Priority

CN 202010069004 A 20200121
CN 202010542779 A 20200615
CN 2020106529 W 20200803

Abstract (en)

The invention relates to a battery binder, a lithium ion battery negative plate and a lithium ion battery, and belongs to the technical field of lithium ion batteries to solve a technical problem of providing a binder for the battery. The binder comprises a polymer with a hydrophilic unit and a hydrophobic unit; and in the polymer, a medium-low molecular weight polymer accounts for less than 5 wt% of the total polymer, and the molecular weight of the medium-low molecular weight polymer is less than or equal to 100,000. The binder provided by the invention is strong in adhesive force, simple in preparation method and low in cost, and not only can reflect higher adhesive force, but also can increase the proportion of the active material when the binder amount is 1.5-2% by being compared with the amount of 2.5-5% of an existing negative plate binder, so that the energy density of the battery is increased.

IPC 8 full level

C09J 133/00 (2006.01); C08F 220/00 (2006.01); C08F 226/10 (2006.01); H01M 4/62 (2006.01); H01M 10/0525 (2010.01)

CPC (source: CN EP KR US)

C08F 212/08 (2013.01 - KR); C08F 218/08 (2013.01 - KR); C08F 220/06 (2013.01 - KR); C08F 220/1802 (2020.02 - EP KR); C08F 220/1804 (2020.02 - KR); C08F 220/1806 (2020.02 - KR); C08F 220/1808 (2020.02 - KR); C08F 220/20 (2013.01 - EP); C08F 220/281 (2020.02 - KR US); C08F 220/44 (2013.01 - EP); C08F 220/48 (2013.01 - CN KR); C08F 220/54 (2013.01 - EP); C08F 220/56 (2013.01 - KR US); C08F 226/10 (2013.01 - KR); C08K 3/04 (2013.01 - US); C09D 133/08 (2013.01 - EP); C09D 133/20 (2013.01 - EP); C09J 133/08 (2013.01 - EP); C09J 133/20 (2013.01 - EP); C09J 133/26 (2013.01 - CN KR); H01M 4/0404 (2013.01 - EP); H01M 4/13 (2013.01 - EP); H01M 4/139 (2013.01 - EP); H01M 4/62 (2013.01 - EP); H01M 4/621 (2013.01 - EP); H01M 4/622 (2013.01 - CN EP KR US); H01M 10/052 (2013.01 - EP); H01M 10/0525 (2013.01 - CN EP KR); H01M 50/409 (2021.01 - EP); H01M 2004/027 (2013.01 - EP KR US); Y02E 60/10 (2013.01 - EP)

C-Set (source: EP)

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

Designated extension state (EPC)

BA ME

Designated validation state (EPC)

KH MA MD TN

DOCDB simple family (publication)

EP 4095213 A1 20221130; EP 4095213 A4 20230719; CN 111500228 A 20200807; CN 111500228 B 20210316; CN 112662348 A 20210416; CN 112662348 B 20230829; CN 112680147 A 20210420; CN 112680147 B 20230120; JP 2023511924 A 20230323; JP 7480310 B2 20240509; KR 20220131535 A 20220928; TW 202128926 A 20210801; TW I746131 B 20211111; US 2023068865 A1 20230302; WO 2021147295 A1 20210729

DOCDB simple family (application)

EP 20915776 A 20200803; CN 202010542779 A 20200615; CN 2020106529 W 20200803; CN 202110104239 A 20200615; CN 202110105463 A 20200615; JP 2022544430 A 20200803; KR 20227028830 A 20200803; TW 109129173 A 20200826; US 202017794258 A 20200803